Engine base construction



Sept. 13, 1932 A. c. BOOCK 1,876,844

ENGINE BASE CONSTRUCTION Filed Jan. '5, 1951 INVENTOR HLFRED C. 5000K B Y% ATTORNEY I UNITD? ATES Lsiaaaa TEN o'FI .arrnn'nc. BOOCK, ornntorr, Wisconsin, ASSIGNQB To FAIRBANKS, MORSE &, co., 1 i or cnIcAeo, ILLINOIS, A CORPORATION or ILLINOIS ENGINE BASE consrnucrrion Application filed January 5,1931. Serial n6. .-506,626.

This invention relates to improvements in engine base constructions. f 7

An object of he present invention is to provide an improved engine sub-base which is 6 simple in construction and economical to manufacture. V

A further object is to provide an improved engine sub-base which combines maxium strength with lightness, and a minimum'of 70 material.

An additional object is to provide an improved sub-base for internal combustion en- 35) parts and the accompanying drawing in which:

Fig. 1 is a side elevation of a preferred form of internal combustion engine to which the present improvements are applied; and

I Fig. 2 is an end elevation partially in section of the improved engine sub-base shownin Fig. 1. It will, of course, beunderstood 'that'the present detailed description of parts and the accompanying drawing relate to a single embodiment of the invention, and that substantial changes may be made in the described arirangement and construction of parts, without departing from the spirit and full "intended Referring now by numerals to the draw ing, 10 designates generally the frame portion ofa preferred form of internal combustion engine, which is by preference provided with an integral depending portion 11; the side portions 12 and 13 of which are'disposed inwardly of the outer margins of the engine frame proper. The engine frame is provided with laterally extending. base portions 14 and 59 .15 each of which, by'preference, form a right 'to. 'tion of the knife edge projections 16,.in preventing displacement of the engine along the sub-base,'is augmented by the relation angled or shouldered portion, withthe side wallportions .12 and 13 respectively, of the crank case. It may here be noted that the crankcase construction, including portion 11, is by preferencesimilar to'that described in my copending application filed J an. '5, 1931, and bearing Serial No. 506,624;

On each of the side walls 12 and 13 of the crank case are cast, by preference, a plurality of lug or gripping portions 16, which are tapered outwardly from their point of connection with the engine base, to a longitudinal knife edge 17 for a purpose hereinafter appearing. The frame portion 10 of the engine is by preference cast in a single piece, which includes the depending crank case'porti'on. The present preferred form of engine subbase is constructed by a pair of sill members 18, which may be of wood, and which are placed one on each side-of the depending portion of the engine crank case. The lateral base portions 1d and 15 of the engine rest upon the upper sides of these sub-base members, while the depending side portions 12 and 13 of the crank case act as spacers or separators between these base members. A pairof clamping bolts 19 serve to force the base members into clamping engagement with the sidefportions of the crank case.

'VVhen the nuts on these bolt members are taken up, the longitudinal lug portions 16 are forced into penetrating and gripping engagement with the side walls of the sills forming the sub-base portions, thus eliminat- 'ing' any tendency of theengine to move with respect to the sub-base, either along the base, or angularly or upwardly with respect there- As will appear from Fig. 1 the funceXisting betweenthe throughbolts 19, each of which laterally abuts an opposite end portion ofthe depending base portion'll of the en- 7 gineQ As will appear. from Fig. 1, my pref- 'erence is to dispose the bolts 19, not only in spaced relation, considered endwise of the engine and sub-base, but also appreciably spaced vertically, one from the. other. This arrangement is of advantage in ,case the sill members 18 are formed of wood, in which the grain usually extends lengthwise of the members; the vertical spacing of the through bolts preventing any tendency of the sills to split along the line connecting the centers of the assembly bolts. As may be desired the projections 16 may, contrary to the preferred arran ement appearing in Fig. 1, be spaced vertically as well as longitudinally.

It will further appear that the use of knife edge members 16, extending into distinct penetrating engagement with the sill members of the sub-base, obviates the necessity of the usual vertically disposed engine hold-down bolts heretofore regarded as indispensable. As will further appear from the drawing, no more than a pair of the horizontally-chsposed through bolts, such as 19, are necessary completely to assemble and secure the sub-base to the base proper, or frame of the engine.

According to the preferred construction, when the present subbase is employed in con nection with an engine of the type described in the above noted. copending application, it will be apparent that the described sub-base construction conduces to neatness of appearance, as well as correctness of construction, since the outer faces of the sill members 18 coincide with the vertical planes defining the lateral limits of the frame and thus the lateral members of the base constitute, in effect, lower marginal continuations of the frame.

While the sub-base herein described is intended primarily for supporting internal combustion engines, it is apparent that the same or a. similar arrangement may be used for mounting other machinery or apparatus. The presently described assembly provides a convenient portable foundation for engines, which serves as a means for readily and easily transporting the engine upon its skid-form- .ing base from place to place as may be needed in the particular locality.

The present invention provides a. simple engine subbase which is formed of a minimum number of parts and is readily assembled and disassembled. This improved subbase may be readily utilized as a permanent engine foundation by simply filling the space between the wood base members with concrete or like materials.

I claim:

1. In an internal combustion engine having a casing portion depending from the frame of the engine, paired -sub-base members extendinglongitudinally of the engine, and laterally engaging said casing portion holding bolts extending transversely of the engine and of said sub-base members, and means formed integrally with, and extending from the engine base, coacting with said bolts for securing said engine and sub-base against relative displacement.

2. In an internal combustion engine, a depending crank case portion of relatively restricted width, a sub-base including detachable sill members extended longitudinally of the base and laterally adjacent said portion of restricted Width, extensions formed in tegrallyon the base and adapted to prevent displacement of the sill members relative to the base, and bolts for securing the sill members in engagement with said extensions said bolts exteriorly engaging opposite side walls of said depending case portion.

8. In an internal combustion engine, a hollow, depending base, sub-base members disposed laterally along the base, projections on the base extending into said sub-base members, and bolts extending through said subbase members, and spaced to receive the depending base between the bolts and sub-base members. 7 V

4:. In an internal combustion engine, a frame having a hollow depending base portion intermediate its sides and ends, a pair of apexed members carried laterally of the base portion, opposed sill members disposed laterally of the base portion and bolts for securing the sill members to the base portion with the apexed members in penetrating engagement With said sill members, said bolts extending transversely through the sill members, exteriorly adjacent the ends of said depending base portion.

5. In an internal combustion engine, a frame including a depending crank case portion, a pair of sill members adapted for lateral engagement with the opposite sides of the depending base portion, the frame being laterally under-cut to provide shoulder portions bearing upon the upper surfaces of the sill members, and transverse through bolts for assembling the sill members on opposite sides of the depending base portion, within said under-cut portions and substantially in line with the outer margins of the frame, said bolts engaging the opposite ends of the de pending crank case portion.

6. In an internal combustion engine, a frame portion including a laterally undercut base member, a pair of sill members disposed laterally of the base member so as substantially to fill the undercut portions, a plurality of projections extending laterally of one of said members and adapted internally to engage other of said members, and holding elements for assembling said members in interengaging relation through said projections, said elements extending through said sill members adjacent opposite ends of the base member, and arranged to prevent relative gndwise movement of the sills and base mem- 7. In an internal combustion engine, a laterally recessed, hollow base portion having longitudinally extending, laterally projecting edge members disposed on opposite sides of the base portion, wood sills disposed on opposite sides of the base portion within the ALFRED G. BOOCK. 

